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CVE-2025-39890— wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ath12k_service_ready_ext_event函数中未释放svc_rdy_ext.mac_phy_caps，可能导致内存泄漏。

AI Predicted 3.3 Difficulty: Moderate EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 10

VendorProduct Version RangeStatus
Linux Linux d889913205cf7ebda905b1e62c5867ed4e39f6c2< 99dbad1b01d3b2f361a9db55c1af1212be497a3d affected
d889913205cf7ebda905b1e62c5867ed4e39f6c2< 3a392f874ac83a77ad0e53eb8aafdbeb787c9298 affected
d889913205cf7ebda905b1e62c5867ed4e39f6c2< 1089f65b2de78c7837ef6b4f26146a5a5b0b9749 affected
d889913205cf7ebda905b1e62c5867ed4e39f6c2< 89142d34d5602c7447827beb181fa06eb08b9d5c affected
6.3 affected
< 6.3 unaffected
6.6.94≤ 6.6.* unaffected
6.12.34≤ 6.12.* unaffected
… +2 more rows
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I. Basic Information for CVE-2025-39890

Vulnerability Information
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Vulnerability Title
wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix memory leak in ath12k_service_ready_ext_event Currently, in ath12k_service_ready_ext_event(), svc_rdy_ext.mac_phy_caps is not freed in the failure case, causing a memory leak. The following trace is observed in kmemleak: unreferenced object 0xffff8b3eb5789c00 (size 1024): comm "softirq", pid 0, jiffies 4294942577 hex dump (first 32 bytes): 00 00 00 00 01 00 00 00 00 00 00 00 7b 00 00 10 ............{... 01 00 00 00 00 00 00 00 01 00 00 00 1f 38 00 00 .............8.. backtrace (crc 44e1c357): __kmalloc_noprof+0x30b/0x410 ath12k_wmi_mac_phy_caps_parse+0x84/0x100 [ath12k] ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k] ath12k_wmi_svc_rdy_ext_parse+0x308/0x4c0 [ath12k] ath12k_wmi_tlv_iter+0x5e/0x140 [ath12k] ath12k_service_ready_ext_event.isra.0+0x44/0xd0 [ath12k] ath12k_wmi_op_rx+0x2eb/0xd70 [ath12k] ath12k_htc_rx_completion_handler+0x1f4/0x330 [ath12k] ath12k_ce_recv_process_cb+0x218/0x300 [ath12k] ath12k_pci_ce_workqueue+0x1b/0x30 [ath12k] process_one_work+0x219/0x680 bh_worker+0x198/0x1f0 tasklet_action+0x13/0x30 handle_softirqs+0xca/0x460 __irq_exit_rcu+0xbe/0x110 irq_exit_rcu+0x9/0x30 Free svc_rdy_ext.mac_phy_caps in the error case to fix this memory leak. Tested-on: QCN9274 hw2.0 PCI WLAN.WBE.1.4.1-00199-QCAHKSWPL_SILICONZ-1
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ath12k_service_ready_ext_event函数中未释放svc_rdy_ext.mac_phy_caps，可能导致内存泄漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux d889913205cf7ebda905b1e62c5867ed4e39f6c2 ~ 99dbad1b01d3b2f361a9db55c1af1212be497a3d -
Linux Linux 6.3 -

II. Public POCs for CVE-2025-39890

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III. Intelligence Information for CVE-2025-39890

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Same Patch Batch · Linux · 2025-09-24 · 3 CVEs total

CVE-2025-39889 8.1 HIGH Bluetooth: l2cap: Check encryption key size on incoming connection
CVE-2024-58241 7.8 HIGH Bluetooth: hci_core: Disable works on hci_unregister_dev

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2025-39890

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